Writing instrument



ATTDRN 2Y5 United Statesv Patent WRITING INSTRUMENT BasilioTrespalacios; Mexico City, Mexico Application December 2, 1957, SerialNo. 700,089

1 Claim. ('Cl. 12()45.6)

This invention relates to a writing instrument, and more particularly toa fountain pen.

The object of the invention is to provide a writing instrument thatincludes a novel means of supplying ink to the writing point.

Another object of the invention is to provide a writing instrument thatincludes a barrel which is provided with an ink holding reservoirtherein, and wherein a member is detachably connected to the barrel andwherein the last named member has means for supplying an adequate supplyof ink to the writing point.

A further object of the invention is to provide a writing instrumentthat is extremely simple and inexpensive to manufacture.

Other objects and advantages will be apparent during the course of thefollowing description.

In the accompanying drawings, forming a part of this application, and inwhich like numerals are used to designate like parts throughout thesame.

Figure 1 is an elevational view of a writing instrument, constructedaccording to the present invention.

Figure 2 is a sectional view taken on the line 22 of Figure 1.

Figure 3 is a sectional view showing the cap removed from the writingpoint and with parts broken away and in section.

Figure 4 is a sectional view taken on the line 4-4 of Figure 2.

Figure 5 is an elevational view of the body member, with parts brokenaway and in section.

Figure 6 is a perspective view of the detachable support member, withparts broken away and in section.

Referring in detail to the drawings, the numeral 10 indicates thewriting instrument of the present invention, and the writing instrument10 includes a barrel 11 which is provided with a hollow interior thatdefines a reservoir 12 for holding a quantity of ink 13.

The barrel 11 is provided with a shoulder 14 that has a central aperture15 therein, Figure 3, whereby the ink 13 can fiow from the reservoir 12out through the aperture 15. Any suitable mechanism can be used forfilling the reservoir 12 with ink 13.

Projecting from an end of the barrel 11 and secured thereto or formedintegral therewith is an internally threaded neck 16. As shown in Figure6, there is further provided a support member which is indicatedgenerally by the numeral 17, and the support member 17 includes a firstexternally threaded portion 18 which threadedly engages the neck 16. Thesupport member 17 further includes a second portion 19 which is alsothreaded, and the portion 19 is of greater diameter than the portion 18.A longitudinally extending centrally disposed bore 20 extends throughthe portions 18 and 19, and the bore 20 registers with the aperture 15in the shoulder 14.

As shown in the drawings, the support member 17 further includes a thirdportion 21 which is provided with a pointed end or tip 24. The thirdportion 21 of the support member 17 is further provided with a plu icerality of spaced parallel channels 22 and these channels define.therebetween spaced parallel. circular ribs; 23. There is provided inthe portion 21 a plurality of spaced apart slots 25 whereby ink canselectivelyflow or pass through the proper slots until. it reaches. thewriting tip of. the instrument.

As shown in Figure 5, the numeral 26 indicatesa. body member which isprovided with an inner threaded portion 27 which is adapted tothreadedly engage the portion 19 of the support member 17. The bodymember 26 further includes a pointed tip or point which is indicated bythe numeral 28, and there is provided adjacent the point 28 a pluralityof spaced apart slits 29.

As shown in Figures 1 and 2, a cap 30 may be arranged over the Writingtip when the fountain pen is not being used, and the cap 30 may beprovided with a conventional retaining clip 31.

From the foregoing, it is apparent that there has been provided awriting instrument which includes a novel writing tip and a means forfeeding ink thereto. When the writing instrument 10 is not being used,the cover 30 is in the position shown in Figures 1 and 2. When theinstrument is being used for writing, the cover 30 can be readilyremoved in the usual manner, and then with the pen in the position ofFigure 3, the ink will flow from the reservoir 12 through the aperture15 and then the ink which is indicated by the numeral 13 will fiowthrough the bore 20. Some of this ink will flow through the slots 25into the channels 22 so that the channels 22 will act as supplementaryreservoirs for holding some of the ink. This ink can then work its waydown to the vicinity of the tip 24 and the tip 28 so that when a personpresses on the tip of the writing instrument, the ink will flow so thatthe pen can be used for writing as desired.

It is tobe noted that the support member 17 includes the portion 18which threadedly engages the neck 16, and this construction permits thesupport member 17 to be removed and replaced when ever desired.Furthermore, the body member 26 includes the threaded portion 27 whichthreadedly engages the portion 19 so that by unscrewing the body member26, different types or other body members 26 can be arranged on thewriting instrument. Thus, it will be seen that the construction of thepresent invention provides a means whereby the support member 17 andbody member 26 are replaceable so that the user can write with thewriting tip that best suits his fancy or desires.

The parts can be made of any suitable material and in different shapesor sizes.

The point may be made of hard metal and may include portions thereofwhich are made of steel or iridium or other suitable material, and ifdesired a suitable cover may be arranged over the pen point. The pointmay be made of polished metal and the point may be constructed so thatfine lines or heavy lines can be made, on sheets of paper or the like.The channels 22 and ribs 23 and slots 25 provide a means whereby anadequate supply of ink is available for writing on the paper or othermaterial. A conventional type of ink can be used in the pen, that is, acommon type of ink can be used.

The above description of the invention is for illustrative purposes onlyand it is understood that modifications may be made in the constructionwithin the scope and spirit of the following claim.

I claim:

In a writing instrument, a tubular barrel provided with a fluid holdingreservoir therein, a shoulder in said barrel provided with a centralaperture for the passage therethrough of fluid from said reservoir, aninternally threaded neck projecting from an end of said barrel, asupport member including a first cylindrical portion arranged sectionthreadedly engaging the second threaded portion of said support member,said body member having an end portion which tapers to a point, therebeing a plurality of spaced apart slits in the pointed end of said bodymember.

References Cited in the file of this patent UNITED STATES PATENTS288,290 Wirt Nov. 13, 1883 784,538 Bender Mar. 14, 1905 2,619,070 BakerNov. 25, 1952

